Paroxysm/ˈpærəksɪzəm/ Definition 1 of 3Pro Tip 1/3Intensity Indicator Use 'paroxysm' to describe an intense episode of an emotion or activity, suggesting it's extreme. He collapsed in a paroxysm of grief at the news. Pro Tip 2/3Unexpected Eruption 'Paroxysm' often implies the event is sudden and may surprise those around. A paroxysm of laughter overtook her during the solemn ceremony. Pro Tip 3/3Brief Duration A 'paroxysm' typically does not last a long time; it's a brief outburst. After a short paroxysm of anger, he regained his composure.